Patent US3281307A successfully refreshed from Google Patents.
US3281307A
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Assignee: AMERICAN SURFPAC Corp A CORP OF PA
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Filing: 1962-11-05
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Granted: 1966-10-25
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Delmer H Moeller
- 👤 Frank E Towsley
- 👤 Charles F Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/10; C02F3/101; B; B01; B01J; B01J19/00; B01J19/32; F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/32224; B01J2219/32227; B01J2219/32248; B01J2219/32251; B01J2219/324; B01J2219/32483; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/11; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24628; Y10T428/24669
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A BUNDLE OF EXTENDED SURFACE ELEMENTS COMPRISING A PLURALITY OF PLASTIC SHEETS, EACH SHEET BEING GENERALLY RECTANGULAR IN FORM AND HAVING A PLURALITY OF GENERALLY SINUSOIDAL PARALLEL CORRUGATIONS FORMED ON A FIRST PORTION OF THE SHEET AND A PLURALITY OF GENERALLY SINUSOIDAL PARALLEL CORRUGATIONS FORMED ON THE SECOND PORTION OF THE SHEET, THE CORRUGATIONS OF THE FIRST AND SECOND PORTIONS EXTENDING INWARDLY TOWARD THE SECOND AND FIRST PORTIONS RESPECTIVELY, THE CORRUGATIONS ON THE FIRST AND SECOND PORTIONS OF THE SHEET HAVING THEIR PEAKS DISPLACED BY ABOUT 180*, THE CORRUGATIONS OF THE FIRST AND SECOND PORTIONS HAV ING DIMENSIONS IN A DIRECTION PARALLEL TO THE CORRUGATIONS IN A RATIO OF ABOUT 1:1 AND THE SHEET PORTIONS HAVING A SMOOTH CURVED TRANSITION HAS A CROSS-SECTIONAL TWEEN, THE TRANSITION SECTION HAS A CROSS-SECTIONAL CONFIGURAIT OF THE CORRUGATIONS WHICH IS NON-LINEAR, THE SHEET BEING SO CONSTRUCTED AND ARRANGED THAT A LIKE SHEET PLACED IN FACE TO FACE ENGAGEMENT THEREWITH WILL NEST AND NO ROTATION OF ONE SHEET ABOUT 180* IN A PLANE CONTAINING THE CORRUGATIONS THAT ADJACENT SHEETS WILL DEFINE A PLURALITY OF PASSAGEWAYS THEREBETWEEN GENERALLY PARALLEL TO THE CORRUGATIONS, THE SHEETS BEING POSITIONED WITH ADJACENT PEAKS AND TROUGHS OF THE CORRUGATIONS OF ADJACENT SHEETS IN GENERALLY CONTIGUOUS RELATIONSHIP, ADJACENT SHEETS BEING AFFIXED TO EACH OTHER.
Claim 2
Dependent Claim
212 words
A BUNDLE OF EXTENDED SURFACE ELEMENTS COMPRISING A PLURALITY OF PLASTIC SHEETS, EACH SHEET BEING GENERALLY RECTANGULAR IN FORM AND HAVING A PLURALITY OF GENERALLY SINUSOIDAL PARALLEL CORRUGATIONS FORMED ON A FIRST PORTION OF THE SHEET AND A PLURALITY OF GENERALLY SINUSOIDAL PARALLEL CORRUGATIONS FORMED ON THE SECOND PORTION OF THE SHEET, THE CORRUGATIONS OF THE FIRST AND SECOND PORTIONS EXTENDING INWARDLY TOWARD THE SECOND AND FIRST PORTIONS RESPECTIVELY, THE CORRUGATIONS ON THE FIRST AND SECOND PORTIONS OF THE SHEET HAVING THEIR PEAKS DISPLACED BY ABOUT 180*, THE CORRUGATIONS OF THE FIRST AND SECOND PORTIONS HAV ING DIMENSIONS IN A DIRECTION PARALLEL TO THE CORRUGATIONS IN A RATIO OF ABOUT 1:1 AND THE SHEET PORTIONS HAVING A SMOOTH CURVED TRANSITION HAS A CROSS-SECTIONAL TWEEN, THE TRANSITION SECTION HAS A CROSS-SECTIONAL CONFIGURAIT OF THE CORRUGATIONS WHICH IS NON-LINEAR, THE SHEET BEING SO CONSTRUCTED AND ARRANGED THAT A LIKE SHEET PLACED IN FACE TO FACE ENGAGEMENT THEREWITH WILL NEST AND NO ROTATION OF ONE SHEET ABOUT 180* IN A PLANE CONTAINING THE CORRUGATIONS THAT ADJACENT SHEETS WILL DEFINE A PLURALITY OF PASSAGEWAYS THEREBETWEEN GENERALLY PARALLEL TO THE CORRUGATIONS, THE SHEETS BEING POSITIONED WITH ADJACENT PEAKS AND TROUGHS OF THE CORRUGATIONS OF ADJACENT SHEETS IN GENERALLY CONTIGUOUS RELATIONSHIP, ADJACENT SHEETS BEING AFFIXED TO EACH OTHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |